List of well known ports (computing) - List of well known ports (computing) IANA is responsible for assigning port numbers to specific uses. The Well Known Ports are those in the range 0-1023. On Unix-derived operating systems, opening a port in this range to receive incoming connections requires root privileges. See the IANA list of port assignments for a full list. List of network protocols, by port (not exhaustive, please extend and tidy) 21/tcp FTP The file transfer protocol 22/tcp SSH Secure logins, file transfers(scp) and port forwarding 23/tcp Telnet non secure text communications 25/tcp SMTP Simple Mail Transfer Protocol (E-mail) 79/tcp finger Finger 80/tcp HTTP HyperText Transfer Protocol (WWW) 88/tcp Kerberos Authenticating agent 110/tcp POP3 Post Office Protocol (E-mail) 113/tcp ident old identification server system 119/tcp NNTP used for usenet newsgroups 220/tcp.
Port (computing) - Port (computing) In computing, a port (derived from seaport) is usually an interface where data is sent and received. An exception is a software port (derived from transport), which is software that has been "transported" to another computer system (see below for details). Table of contents showTocToggle("show","hide") 1 Hardware Port 2 Network Port 3 I/O or Machine Port 4 Software Port Hardware Port A hardware port is an outlet on a piece of equipment into which a plug or cable connects. For instance, a computer may have a keyboard port, into which the keyboard is connected. Network Port A network port is an interface for communicating with a computer program over a network. Network ports are usually numbered and a network implemetation like TCP or UDP will.
List of Internet topics - List of Internet topics This page aims to list articles on Wikipedia that are related to the Internet and Internet Protocol. This is so that those interested in the subject can monitor changes to the pages by clicking on Related changes in the sidebar and on the bottom of the page.. The list is not necessarily complete or up to date - if you see an article that should be here but isn't (or one that shouldn't be here but is), please do update the page accordingly. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Ad hoc network -- Address resolution protocol -- ADSL -- AirPort networking.
Internet Protocol - The minimum-length datagram is 20 bytes and the maximum is 65535. The maximum size datagram which any host is required to be able to handle is 576 bytes, but most modern hosts handle much larger packets. Sometimes subnetworks impose further restrictions on the size, in which case datagrams must be fragmented. Fragmentation is handled in either the host or packet switch in IPv4, and in the host only in IPv6. The next 16-bit field is an identification field. This field is primarily used for uniquely identifying fragments of an original IP datagram. Some experimental work has suggested using the ID field for other purposes, such as for adding packet tracing information to datagrams in order to help trace back datagrams with spoofed source addresses. A 3-bit field follows and is used.
Internet protocol suite - defined. The authoritative reference on this subject is RFC 1122. The Internet protocol suite can be described by analogy with the OSI model, which describes the layers of a protocol stack, not all of which correspond well with Internet practice. In a protocol stack, each layer solves a set of problems involving the transmission of data, and provides a well-defined service to the higher layers. Higher layers are logically closer to the user and deal with more abstract data, relying on lower layers to translate data into forms that can eventually be physically manipulated. The Internet model was produced as the solution to a practical engineering problem. The OSI model, on the other hand, was a more theoretical approach, and was also produced at an earlier stage in the evolution of.
Internet Assigned Numbers Authority - to grant ICANN control of IANA for up to three more years. It invited alternative offerors to submit in writing a detailed response on how they could meet the requirements themselves. Such responses were to be received no later than 10 days following publication of the invitation and the decision on whether to open the "tender" to competition was to remain solely within the discretion of the government. The relationship between ICANN and the ccTLDs and RIRs can best be described as highly political, and there have been a number of proposals to decouple the IANA function from ICANN completely, with or without the cooperation of the U.S. government. See also: CIDR BGP Routing DNS List_of_well_known_ports_(computing).
Itanium - Itanium In computing, the Itanium is a 64-bit microprocessor architecture, developed jointly by Hewlett-Packard and Intel. Itanium represents the goal of producing a "post-RISC era" high performance architecture using a VLIW design. Its native instruction set is the new IA-64, but it can run x86 code (slowly) in a firmware emulation mode, and has hooks for PA-RISC family migration. Table of contents showTocToggle("show","hide") 1 Design 2 Implementation 3 Concerns Design At the most basic level the Itanium design is similar to RISC. That is, the core logic consists of a small set of instructions that are designed to be able to run very fast. Like most modern CPUs the Itanium uses several cores run in parallel for extra speed, a design known as a superscalar processor. Where.
List of reference tables - List of reference tables You usually find a collection of reference tables in the back of almanacs, dictionaries and encyclopedias (or an index of them, if they're scattered throughout the work). As these tables appear, please add them to this index. What we have in mind is listings or tabular information for quick reference, not narrative articles. Alternate versions: For an alphabetical listing: Special:Allpages/List of (cont. 1 2 3 4 5 6) By type: List of glossaries (glossaries are also included in this list) Lists of articles by category (also included here) List of themed timelines (also included in this list) List of trivia lists (also included here) List of countries (general lists by country not included here) Lists of people (not included here) Table of.
List of major flops - List of major flops A flop or product failure is a product that doesn't reach expectations of success, failing to come even close. A major flop goes one step further and is recognized for its almost complete lack of success. However, most of the items listed below are ones that had high expectations, large amounts of money or widespread publicity, but fell far short of success. Obviously, due to the subjective nature of "success" and "meeting expectations", there can be disagreement about what constitutes a "major flop". Two examples: David McReynolds ran for President of the United States in 1980 and 2000 on the socialist ticket, but came nowhere near winning. However, he would never characterize his campaign as a flop because he ran for president.
Timeline of computing 1950-1979 - Timeline of computing 1950-1979 This article presents a detailed timeline of events in the history of computing from 1950 to 1979. For a narrative explaining the overall developments, see the related history of computing. Computing timelines: 500 BC-1949, 1950-1979, 1980-1989, 1990-present 1950 First commercial computer: Konrad Zuse leases his Z4 machine to ETH Zuerich. 1950 Floppy disk invented at the Imperial University in Tokyo by Doctor Yoshiro Nakamats, the sales license for the disk was granted to IBM. 1950 The British mathematician and computer pioneer Alan Turing published a paper describing what would come to be called the Turing Test. The paper explored the nature and potential development of human and computer intelligence and communication. 1951 High level language compiler invented by Grace Murray Hopper. 1951 Whirlwind,.
List of esoteric programming languages - List of esoteric programming languages The following is a list of esoteric programming languages and lesser-known programming languages: 23 4DL, a Befunge descendant ACS, a scripting language used in Hexen and modern Doom ports ADL, the Adventure Definition Language ADVSYS AKI (AvtoKod Ingenera, "engineer's autocode") for Minsk family of computers Ale ALPACA, a meta-language for programming arbitrary cellular automata ARCAL, a language for cellular automata Aura, a Brainfuck descendant B B5 BAK BANCStar BCPL BDAMD Beatnik Befunge beta-Juliet BFM, a Brainfuck variant with macros Blank Bloop Bon programming language Boo-yah Borg Brainfuck, designed to have the smallest compiler ever Bub, a Brainfuck variant Bubble Bullfrog C- Chef Choon COBOLscript Color Forth COMAL Condit COW CUPL Dis, a variant of Malbolge Doublefuck, an extended version of Brainfuck.
Hacker - a police car atop the dome on MIT's Building 10, that was a hack, and the students involved were therefore hackers. Computer culture at MIT developed when members of the Tech Model Railroad Club started working with a Digital Equipment Corporation PDP-1 computer and applied local model railroad slang to computers. In modern computer culture, the label "hacker" is a compliment, indicating a skilled and clever programmer. In the media, however, it has negative connotations and has become synonymous with "software cracker". The term hacker has five meanings that are in common usage: Someone who knows a (sometimes specified) set of programming interfaces well enough to write novel and useful software without conscious thought on a good day. Someone who (usually illegally) attempts to break into or otherwise subvert the security.
Database management system - around a private multitasking kernel with built-in networking support. A typical database application will not include these features internally, but may be able to support similar functionality by relying on the operating system to provide these features for it. Table of contents showTocToggle("show","hide") 1 History 1.1 Navigational databases 1.2 Relational databases 1.3 Multidimensional databases 1.4 Object databases 2 Description 3 List of commonly used database management systems 4 See also History Databases have been in use since the earliest days of electronic computing, but the vast majority of these were custom programs written to access custom databases. Unlike modern systems which can be applied to widely different databases and needs, these systems were tightly linked to the database in order to gain speed at the price of flexibility. Navigational databases As.
2000 - the 2000s are abbreviated 00s. See also: 2000 in film 2000 in literature 2000 in music 2000 in sports 2000 in television Table of contents showTocToggle("show","hide") 1 Events 2 Year in topic 3 Historical Relic and Ancient Remain 4 Births 5 Deaths 6 Computing 7 Nobel Prizes Events Y2K does not cause the world's computers to fail. Saccharomyces cerevisiae genome sequenced. Mexico - Vicente Fox becomes the first opposition President to take power since Francisco I. Madero in 1911. He won the Presidency as candidate of the rightist PAN (National Action Party). January 3 - Final original Peanuts comic strip is published January 5-8 - The 2000 Al Qaeda Summit January 10 - America On-line announces an agreement to buy Time Warner for $162 billion. This is the largest-ever corporate merger..
A Hacker History - International Party Line newsletter. Hoffman's publishing partner, Al Bell, changed the YIPL newsletter's name to TAP, for Technical Assistance Program. 1972 The InterNetworking Working Group is founded to govern the standards of the developing network. Vinton Cerf is the chairman and is known as a "Father of the Internet" 1973 college kids Steve Wozniak and Steve Jobs, future founders of Apple Computer, launch a home industry Homebrew Computer Club making and selling blue boxes. 1970s Susan Thunder is one of the early “phone phreakers,” part of Kevin Mitnick’s crew who brake into phone lines. 1978 First report of teen-age boys being kicked off the telephone system for pranks. Bulletin boards - with names such as Sherwood Forest and Catch-22 - become the venue of choice for phreaks and hackers to gossip,.
Patent - namely, through civil lawsuitss or licensing agreements. Governments typically reserve the right to suspend or cancel a patent at will. An application for a patent (other than a design patent) must explain how to practice (i.e., make and/or use) the invention(s) and must also include "claims" that particularly point out the invention(s). Generally, the exclusive rights are limited to the invention(s) defined by the patent's claims. Patent claims are typically of the form of a long sentence, e.g., "An apparatus for catching mice comprising, a base member for placement on a flat surface, a spring member...", "A chemical for cleaning windows comprised of 10-15% ammonia, ...", "A method for computing future life expectancies, the method comprising gathering personal data including X,Y, Z, ...", etc. Claim language formats and practices vary widely.
Python programming language - have found Python appealing for this reason. Data types and structures Python has a broad range of basic data types. Alongside conventional integer and floating point arithmetic, it transparently supports arbitrarily large integers and complex numbers. It supports the usual panoply of string operations, with one exception: strings in Python are immutable objects, so any string operation that might elsewhere alter a string (such as a substitution of characters) will in Python instead return a new string. Python values, not variables, carry type—meaning that Python is a dynamically typed language, like Lisp and unlike Java or C. All values are passed by reference, not by value. Among dynamically typed languages, Python is moderately type-checked. It is neither as loose as Perl nor as strict as Caml. Implicit conversion is defined for.
McGill University - in the Americas, it has long been considered to be one of the most prestigious universities in Canada and among the finest in North America. Known to some as "The Harvard of the North", McGill is well-known for pioneering research in the medical sciences, chemistry, physics and biology, though it is also famous for its high standard of undergraduate education and has an established history in the humanities, social sciences, law and physical education. In the past, McGill has often been compared with the best U.S. schools (The Gourman Report). Noted for being a research-intensive university, it has in previous years garnered the most research dollars (per faculty) from federal and provincial sources of funding (including CFI, NSERC and other organizations). It also frequently has the highest publication intensity in the.
Informix - could be seen as a 16-bit version of their earlier ISAM work, released on Onyx, a version of Unix for early ZiLOG microprocessors. At RDS, they turned their attention to the emerging SQL market, and adapted a version of the publicly-available Ingres source code to the Unix platform. At the time Ingres had a number of serious limitations: it did page-level locking it relied on the underlying operating system to provide all security, and it limited identifiers to only 18 characters. The availability of the free and well-tested Ingres code base allowed RDS to release their own version as Informix in 1981. It included only the most basic changes to the Ingres system, most notably an adaptation of its query language QUEL to their own Informer language. In 1984 they addressed.
Heinkel He 112 - to the 109 in terms of performance, but was more difficult and expensive to build. Small numbers were used for a short time by the Luftwaffe, and small runs were completed for several other countries. It remains one of the least known production fighter designs. Background When the re-forming Luftwaffe started to look for new planes in the early 1930s, initially training and utility aircraft, Heinkel was one of the most experienced firms in the country. Contracts were received for numbers of two seat planes, and the He 45, 46 and 50 were born. The company also continued to work on fighter designs, which culminated first with the He 49, and later with the improved He 51. This placed the Heinkel firm in good standing with the Reichsluftfahrtministerium (Reich Air Ministry,.
